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Product information

tesa HAF® 58451

30μm black electrically conductive (XYZ) reactive HAF mounting tape

Product description

tesa HAF® 58451 is a reactive heat activated film based on phenolic resin and nitrile rubber with electrically conductive properties. This black double sided tape has no backing. It is protected by a 50 μm PET liner.
At room temperature tesa HAF® 58451 is not tacky. It is activated by heat and pressure applied during the assembly process.
Special features:
  • Extremely high performance, even on small bonding areas and thin design gaps
  • Excellent electrical conductivity in XYZ-direction
  • Superior anti-repulsion properties even at elevated temperatures
  • Good chemical resistance

Main applications

tesa HAF® 58451 is especially recommended for bonding of various metal surfaces, e.g. SUS or AL.
  • ECT grounding with structural bonding requirements

Additional Info

Technical recommendations: tesa HAF® 58451 is not self adhesive. It is activated by heat and pressure over a certain interval. The following values are recommendations for bond line parameters to start with. 1. Pre-lamination: During pre-lamination, the adhesive tape is laminated onto one component. This step does not affect the shelf life time of the adhesive tape. Pre-laminated components can be stored over the same period of time as the adhesive tape. Unforeseeable interactions with customer substrates excluded. setting: ▪ Temperature¹ ≥120 °C ▪ Pressure² ≥5 bar ▪ Time ≥5 s 2. Bonding: Remove the liner from tape after pre-lamination step. Place the pre-laminated component onto the substrate to bond with. Apply sufficient temperature while applying pressure for the bonding time to reach sufficient bonding strength. setting: ▪ Temperature¹ 120-250 °C ▪ Pressure² 5-30 bar ▪ Time 5 s – 3 min ¹ ‘Pre-lamination’ and ‘Bonding’ temperature refer to the data that is measured in the bond line. ² ‘Pre-lamination’ and ‘Bonding’ pressure refer to the force that is transformed from jig surface directly to the bonding area. Bonding strength values were obtained under standard laboratory conditions. (Material: SUS test specimen / bonding conditions: temperature = 180 °C; pressure = 30 bar; time = 30 sec). To reach maximum bonding strength surfaces should be clean and dry. tesa warrants a minimum shelf life of 6 months after slitting for products stored in original packaging at 23 ± 1 °C and 50 ± 5% rel. humidity (standard room temperature following ISO 554). If stored at lower temperatures and dry condition, shelf life time can increase.

Technical properties

Shelf life time < 25°C

_NULL months

Thermal conductivity x-y-direction

_NULL Btu/hr.Ft.F

Bonding strength

_NULL N/mm²

Adhesion to steel (after 14 days), permanent side

_NULL N/cm

Adhesion to steel (after 14 days), removable side

_NULL N/cm

Adhesion to Steel (initial), removable side

_NULL N/cm

Contact resistance z-direction (initial)

_NULL mOhm

Type of adhesive

nitrile rubber / phenolic resin

Adhesion to Steel (t-cycle 100h, -40 - +85°C), permanent side

_NULL N/cm

Bonding temperature


Shelf life time < 15°C

_NULL months

Bonding strength (T-peel)

_NULL N/cm

Bonding strength (push-out)

_NULL N/mm²

Type of liner


Contact resistance z-direction (after 10 days) 60°C, 95%RH storage

_NULL Ohm / square inch

Colour of liner


Bonding strength (L-peel)

_NULL N/cm

Release of liner


Surface resistance x-y-direction (backing)

_NULL Ohm / square

Tensile strength

_NULL N/cm

Surface resistance x-y-direction (adhesive)

_NULL Ohm / square

Adhesion to Steel (t-cycle 100h, -40 - +85°C)

_NULL N/cm

Thermal conductivity z-direction

_NULL Btu/hr.Ft.F

Bonding strength (dynamic shear)

_NULL N/mm²

Contact resistance z-direction (initial)

0.05 Ohm / square inch

Shelf life time < 5°C

_NULL months

Total thickness

30 µm

Release Force (tight) liner


Thickness of liner

_NULL µm

Backing material


Temperature resistance long term


Surface resistance x-y-direction

0.5 Ohm / square

Softening point




Type of cover liner


Surface resistivity (min.)

_NULL 10^12 Ω

Adhesion to Steel (t-cycle 100h, -40 - +85°C), removable side

_NULL N/cm

Adhesion to Steel (initial), permanent side

_NULL N/cm

Volume resistivity

_NULL 10^14 Ωm

Temperature resistance short term


tesa® products prove their impressive quality day in, day out in demanding conditions and are regularly subjected to strict controls. All technical information and data above mentioned are provided to the best of our knowledge on the basis of our practical experience. They shall be considered as average values and are not appropriate for a specification. Therefore tesa SE can make no warranties, expressed or implied, including, but not limited to any implied warranty of merchantability or fitness for a particular purpose. The user is responsible for determining whether the tesa® product is fit for a particular purpose and suitable for the user’s method of application. If you are in any doubt, our technical staff will be glad to support you.

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